How to solve this question?When Mrs Lee was 44 years old,her son was twice her daughter's age.Mrs Lee will be twice he son's age when her daughter is 26 years old.How old will Mrs Lee be when her daughter is 20 years old
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How to solve this question?
When Mrs Lee was 44 years old,her son was twice her daughter's age.Mrs Lee will be twice he son's age when her daughter is 26 years old.How old will Mrs Lee be when her daughter is 20 years old
当mrs lee44岁时,她的儿子是她女儿年纪的两倍.当她女儿26岁时,mrs lee是她儿子年纪的两倍.那么当她女儿20岁时mrs lee多大?
思路:女人:44,女儿:x,儿子:2x
女人:2y,女儿:26,儿子:y
列式:44-x=2y-26
2x-x=y-26
44-2x=2y-y
得x=6,y=32
可知女儿和女人相差38岁,所以女儿20岁时,女人58岁.
58
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